#include <iostream>

const long long N = 10000000000;

int main()
{
    long long i = 0;
    for (; i < N;) {
        ++i;
        if (i % 1000000000 == 0) {
            std::cout << i << std::endl;
        }
    }
    std::cout << "done";
    return 0;
};
